What's happening in Ottawa this weekend: Oct. 27-29

CTVNewsOttawa.ca looks at things to do in Ottawa, eastern Ontario and western Quebec this weekend.

CTVNewsOttawa.ca looks at things to do in Ottawa, eastern Ontario and western Quebec this weekend.

Trick or Treat with the Mayor is back at Ottawa City Hall on Saturday.

Meet a cast of costumed characters in the "Weird and Wonderful" Heritage Building between 5 p.m. and 8 p.m.

Admission is a non-perishable item or cash donation to the Ottawa Food Bank's Baby Basics Program.

For more information, visit Ottawa.ca.

The Ottawa Redblacks wrap up the CFL season Saturday night at TD Place.

It's Halloween and Fan Appreciation Night as the Redblacks host the Toronto Argonauts at 7 p.m.